Refactor code structure for improved readability and maintainability

services/logic/app/db.py

@@ -7,20 +7,27 @@ from sqlalchemy.orm import Session, sessionmaker
 
 from app.core import settings
 
-engine = create_engine(settings.database_url, pool_pre_ping=True)
+engine = create_engine(
+    settings.database_url,
+    pool_pre_ping=True,
+    connect_args={"connect_timeout": 3},
+)
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
 
 
 def create_schema(metadata: MetaData, attempts: int = 30, delay_seconds: int = 2) -> None:
     last_error: OperationalError | None = None
-    for _ in range(attempts):
+    for attempt in range(1, attempts + 1):
         try:
+            print(f"Connecting to database, attempt {attempt}/{attempts}", flush=True)
             with engine.begin() as connection:
                 connection.execute(text("SELECT 1"))
                 metadata.create_all(bind=connection)
+            print("Database schema is ready", flush=True)
             return
         except OperationalError as exc:
             last_error = exc
+            print(f"Database is not ready: {exc}", flush=True)
             sleep(delay_seconds)
     if last_error:
         raise last_error